Rework website source to incorporate repository name change

[Maspital]

Resolves #72

[Maspital]

Double checked, everything should be fine now. The mistake was kind of obvious, I've only searched for /intrusion-detection-datasets/ and intrusion detection dataset/intrusion detection dataset(s) (all case-insensitive), making sure not to replace something where it doesn't make sense. Still, this misses strings like fkie-cad/intrusion-detection-datasets, so I repeated the process with intrusion-detection-datasets